> now how can ı make analog decimal?

Take a look at the DATASHEET for the PIC16F877... look at the ADCON1 Register and the TABLE for bits 3 thru zero. You will discover that 011x for these bits (x is don't care) will set everything Digital... two examples; ADCON1=%00000110 or ADCON1=%00000111.

As for your buyline... ""You may kill Turks but You cannot defeat them"... King Jan Sobieski of Poland would disagree with that statement (two examples; Chocim 1673, Vienna 1683).